<template>
  <div class="cartcontrol">
    <!--按钮动画-->
    <transition name="move">
      <div class="cart-decrease " v-show="food.count>0" @click.stop="decreaseCart($event)">
        <div class="inner icon-remove_circle_outline"></div>
      </div>
    </transition>
    <div class="cart-count" v-show="food.count>0">{{food.count}}</div>

    <div class="cart-add icon-add_circle" @click.stop="addCart($event)"></div>
  </div>
</template>

<script type="text/ecmascript-6">
  import Vue from 'vue'

  export default {
    props: {
      food: {
        type: Object
      }
    },
    created() {

    },
    methods: {
      addCart(event) {
        if (!event._constructed) {
          return;
        }
        console.log(1);
        if (!this.food.count) {
          Vue.set(this.food, 'count', 1);
          this.food.count = 1;
        } else {
          this.food.count++;
        }
        //提交'cart-add'事件给父组件，第二个是要传递的参数
        this.$emit('cart-add', event.target);
      },
      decreaseCart() {
        if (!event._constructed) {
          return;
        }
        if (this.food.count) {
          this.food.count--;
        }

      }
    }
  }
</script>

<style lang="stylus" rel="stylesheet/stylus">
  .cartcontrol
    font-size 0
    .cart-decrease
      display inline-block
      padding 10px
      margin-bottom -4px
      transition all 0.2s linear
      &.move-transition
        opacity 1
        transform translate3d(0, 0, 0)

      .inner
        transition all 0.2s linear
        line-height 24px
        font-size 24px
        color rgb(0, 160, 220)
        transform rotate(0)
      &.move-enter, &.move-leave-active
        opacity 0
        transform translate3d(24px, 0, 0)
        .inner
          transform rotate(180deg)

    .cart-count
      display inline-block
      vertical-align top
      min-width 12px
      padding-top 6px
      line-height 32px
      text-align center
      font-size 10px
      color rgb(147, 153, 159)
    .cart-add
      display inline-block
      padding 10px
      margin-bottom -4px
      line-height 24px
      font-size 24px
      color rgb(0, 160, 220)


</style>
